Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Measurements

Summary of financial assets measured at fair value on a recurring basis

			Fair Value Measurement
			as of June 30, 2016
	Carrying value
	as of June 30, 2016		Level 1			Level 2		Level 3
Cash equivalents (money market accounts)	$	31,362,847	$	31,362,847	$	—	$	—
Certificate of deposit (included in prepaid expenses and other current assets)		20,000		20,000		—		—
	$	31,382,847	$	31,382,847	$	—	$	—

			Fair Value Measurement
			as of December 31, 2015
	Carrying value
	as of December 31, 2015		Level 1			Level 2		Level 3
Cash equivalents (money market accounts)	$	41,032,351	$	41,032,351	$	—	$	—
Certificate of deposit (included in prepaid expenses and other current assets)		20,000		20,000		—		—
	$	41,052,351	$	41,052,351	$	—	$	—